(4aS,5S)-4,4a,5,6,7,8-hexahydro-5-hydroxy-4a-methylnaphthalen-2(3H)-one
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In dimethyl sulfoxide at 20℃; for 17h; enantioselective reaction; | 97.9% |
With jones reagent Oxidation; |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With N-tosyl-(Sa)-1,1'-binaphthyl-2,2'-diamine-L-prolinamide; benzoic acid at 25℃; for 27h; Neat (no solvent); optical yield given as %ee; enantioselective reaction; | 95% |
With N-tosyl-(Sa)-1,1'-binaphthyl-2,2'-diamine-L-prolinamide; benzoic acid for 168h; optical yield given as %ee; enantioselective reaction; | 94% |
With L-proline at 20℃; for 2h; Catalytic behavior; Aldol Condensation; Ionic liquid; enantioselective reaction; | 88% |
14-noreudesma-4,11-dien-3,9-dione
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
Stage #1: 14-noreudesma-4,11-dien-3,9-dione With methanol; ozone Stage #2: With ferrous(II) sulfate heptahydrate; thiophenol at -78 - 20℃; for 0.5h; | 91% |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
With L-proline at 20℃; for 2h; Catalytic behavior; Temperature; Solvent; Reagent/catalyst; Aldol Condensation; Ionic liquid; enantioselective reaction; | A 78% B n/a |
With (S)-2-(1-pyrrolidinylmethyl)pyrrolidine In dimethyl sulfoxide at 20℃; for 10h; Hajos-Parrish-Eder-Sauer-Wiechert reaction; optical yield given as %ee; enantioselective reaction; | A 55% B n/a |
With (S)-2-(1-pyrrolidinylmethyl)pyrrolidine; trifluoroacetic acid In dimethyl sulfoxide at 20℃; for 48h; Hajos-Parrish-Eder-Sauer-Wiechert reaction; optical yield given as %ee; enantioselective reaction; | A n/a B 52% |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
Wieland-Miescher ketone
Conditions | Yield |
---|---|
L-proline In N,N-dimethyl-formamide for 168h; Ambient temperature; | A 36% B 42% |
Wieland-Miescher ketone
B
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
C
(R)-Wieland-Miescher ketone
D
(-)-(4aR,5S)-5-hydroxy-4a-methyl-4,4a,5,6,7,8-hexahydro-3H-naphthalen-2-one
Conditions | Yield |
---|---|
With α-D-glucose 6-phosphate; oxygen; NADP; glucose-6-phosphate dehydrogenase; recombinant c-hexanone monooxygenase (E. coli TOP10 pQR239) In phosphate buffer at 20℃; for 26h; pH=8.7; Baeyer-Villiger oxidation; Further byproducts given; | A 35% B n/a C n/a D n/a |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With antibody 38C2; PBS buffer In 1,2-dimethoxyethane for 504h; Ambient temperature; Yields of byproduct given. Title compound not separated from byproducts; | A n/a B 7% C n/a |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
6-hydroxy-1,6-dimethylbicyclo<3.3.1>nonane-2,9-dione
C
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
With L-proline In N,N-dimethyl-formamide for 24h; Ambient temperature; Yield given. Title compound not separated from byproducts; |
5β-hydroxy-5α-ethynyl-10β-methyl-Δ1(9)-octalin-2-one
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With silver carbonate In dimethyl sulfoxide |
Wieland-Miescher ketone
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(-)-(4aR,5S)-5-hydroxy-4a-methyl-4,4a,5,6,7,8-hexahydro-3H-naphthalen-2-one
Conditions | Yield |
---|---|
With D-glucose; yeast cells of Candida melibiosica IAM4488 In phosphate buffer at 30℃; for 68h; pH=6.5; Reduction; Enzymatic reaction; |
Wieland-Miescher ketone
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
Kinetic resolution; baker's yeast reduction; Title compound not separated from byproducts; | |
In hexane; isopropyl alcohol Reagent/catalyst; Resolution of racemate; |
2-methylcyclohexane-1,3-dione
methyl vinyl ketone
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
With L-proline In dimethyl sulfoxide at 35℃; for 89h; Product distribution; Further Variations:; Reagents; Addition; | |
With L-proline In dimethyl sulfoxide at 35℃; for 89h; Addition; Title compound not separated from byproducts; | |
Stage #1: 2-methylcyclohexane-1,3-dione With L-proline In dimethyl sulfoxide at 15 - 25℃; for 6h; Stage #2: methyl vinyl ketone In dimethyl sulfoxide at 15 - 25℃; for 180h; asymmetric Robinson annulation; Stage #3: With pyridinium p-toluenesulfonate In benzene for 2h; Heating; Title compound not separated from byproducts; |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
C
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With water In acetonitrile Heating; Title compound not separated from byproducts.; |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
C
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With water; 18O-labeled water In acetonitrile at 80℃; Title compound not separated from byproducts.; |
2-methylcyclohexane-1,3-dione
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: triethylamine / acetonitrile / 20 °C 2: (S)-5,6-dimethyl-2-(pyrrolidin-2-yl)-1H-benzimidazole; TFA / tetrahydrofuran / 48 h / 0 °C View Scheme | |
Multi-step reaction with 2 steps 1: (S)-2-diphenylmethyl-pirrolidine 2: L-proline / 120 h / 25 °C View Scheme | |
Multi-step reaction with 3 steps 1: H2O 2: (i) aq. HClO4, L-proline, MeCN, (ii) /BRN= 969178/, liq. NH3, Et2O 3: Ag2CO3 / dimethylsulfoxide View Scheme |
Wieland-Miescher ketone
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: yeast cells of Toluraspora delbrueckii IFO 10921; glucose / aq. phosphate buffer / 30 °C / pH 6.5 / Enzymatic reaction 2: Jones reagent View Scheme | |
Multi-step reaction with 2 steps 1: NADPH; glucose dehydrogenase; 7α-hydroxysteroid dehydrogenase from extremophilic bacterium Deinococcus marmoris strain / aq. phosphate buffer; dimethyl sulfoxide / 25 °C / Enzymatic reaction 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 17 h / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: NADPH; glucose dehydrogenase; IS2-SDR from Icelandic hot spring sediments / aq. phosphate buffer; dimethyl sulfoxide / 25 °C / Enzymatic reaction 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 17 h / 20 °C View Scheme | |
Multi-step reaction with 3 steps 1: sodium tetrahydroborate / ethanol / 4 h / 0 °C 2: Amano Lipase PS / acetone / 144 h / 45 °C / Enzymatic reaction 3: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 17 h / 20 °C View Scheme |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
C
cis-9-Hydroxy-10-methyl-dekalin-2,5-dion
Conditions | Yield |
---|---|
With (S)-N-(4-nitrophenyl)pyrrolidine-2-carboxamide In chloroform at 20℃; Hajos-Parrish reaction; optical yield given as %ee; enantioselective reaction; |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
cis-9-Hydroxy-10-methyl-dekalin-2,5-dion
Conditions | Yield |
---|---|
With (S)-N-(3,5-bis(trifluoromethyl)phenyl)pyrrolidine-2-carboxamide In chloroform at 20℃; Hajos-Parrish reaction; optical yield given as %ee; enantioselective reaction; | |
With formic acid; (S)-N-{3,6-dichloro-8-[N-(2,4,4-trimethylpentan-2-yl)sulfamoyl]-9H-carbazol-1-yl}pyrrolidine-2-carboxamide formate In chloroform-d1 at 20℃; for 130h; enantioselective reaction; | A n/a B n/a |
2-methylcyclohexane-1,3-dione
methyl vinyl ketone
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With L-proline Robinson annulation; |
2-methyl-2-(3-oxobutyl)cyclohexane-1,3-dione
cyclohexanone
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
With 4-nitro-benzoic acid In water at 22℃; for 24h; Aldol condensation; optical yield given as %ee; enantioselective reaction; |
2-methylcyclohexane-1,3-dione
A
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
B
(R)-Wieland-Miescher ketone
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: triethylamine / 3 h / Inert atmosphere 2: benzoic acid / neat (no solvent) / 120 h / 25 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: triethylamine / dichloromethane / 12 h 2: acetic acid / water / 120 h / 0 °C View Scheme | |
Multi-step reaction with 2 steps 1: acetic acid; hydroquinone / water / 80 °C 2: L-proline / dimethyl sulfoxide / 120 h / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: lipase AS / acetone; dimethyl sulfoxide / 192 h / 10 °C / Inert atmosphere; Enzymatic reaction 2: toluene-4-sulfonic acid / acetone; dimethyl sulfoxide / 2 h / 10 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: triethylamine / neat (no solvent) / 16 h / 20 °C 2: (R)-pyrrolidine-2-(N-(3,5-bis(trifluoromethyl)phenyl)carboxamide) / chloroform / 168 h / 20 °C / Inert atmosphere View Scheme |
cis-9-Hydroxy-10-methyl-dekalin-2,5-dion
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
In diethyl ether at -20℃; | 101.2 g |
(±)-4a,5-cis-(5-hydroxy-4a-methyl-4,4 a,5,6,7,8-hexahydronaphthalen-2(3H)-one)
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: Amano Lipase PS / acetone / 144 h / 45 °C / Enzymatic reaction 2: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 17 h / 20 °C View Scheme |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
(4aS,5S)-4,4a,5,6,7,8-hexahydro-5-hydroxy-4a-methylnaphthalen-2(3H)-one
Conditions | Yield |
---|---|
With sodium tetrahydroborate In methanol; dichloromethane at -78℃; for 0.25h; chemoselective reaction; | 100% |
With sodium tetrahydroborate In methanol at 0℃; for 0.5h; | 97% |
With sodium tetrahydroborate In ethanol at 0℃; | 97% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
ethane-1,2-dithiol
(S)-7a′-methyl-2′,3′,7′,7a′-tetrahydrospiro[[1,3]dithiolane-2,5′-inden]-1′(6′H)-one
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In acetic acid for 5h; Ambient temperature; | 99% |
With toluene-4-sulfonic acid In acetic acid for 6h; | 93% |
With toluene-4-sulfonic acid In acetic acid for 5h; Ambient temperature; | 92% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
(1S,6R)-1-methylbicyclo[4.4.0]decane-2,8-dione
Conditions | Yield |
---|---|
With hydrogen; palladium on activated charcoal In hydrogenchloride; ethanol | 98% |
With glucose-6-phosphate dehydrogenase; metagenomic ene-reductase from pQR1907; β-D-glucose-6-phosphate sodium salt; NADPH In dimethyl sulfoxide at 30℃; for 20h; pH=7.4; Reagent/catalyst; Enzymatic reaction; stereoselective reaction; | 95% |
Multi-step reaction with 2 steps 1.1: 5%-palladium/activated carbon; palladium dichloride; hydrogen / 0.25 h / 20 °C 1.2: 48 h / 20 °C 2.1: 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione / dimethyl sulfoxide / 20 h / 70 °C View Scheme | |
With palladium on activated carbon; hydrogen In ethyl acetate at 20℃; for 2h; |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
ethylene glycol
(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene for 0.916667h; Heating; | 96.7% |
In toluene for 5h; Heating; | 95% |
With 4 A molecular sieve; toluene-4-sulfonic acid at 20℃; for 0.383333h; | 93% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
methyllithium
cis-4a,8a-dimethyloctahydro-2(1H),5(6H)-dione
Conditions | Yield |
---|---|
With copper(l) iodide In diethyl ether at 0 - 20℃; | 96% |
2-ethyl-2-methyl-1,3-dioxolane
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In ethylene glycol Inert atmosphere; regioselective reaction; | 95% |
With toluene-4-sulfonic acid; ethylene glycol | 94% |
With toluene-4-sulfonic acid In ethylene glycol for 30h; Ambient temperature; | 79% |
With toluene-4-sulfonic acid | |
With toluene-4-sulfonic acid In ethylene glycol |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
ethylene glycol
(S)-4a-methyl-4,4a,6,7-tetrahydro-1H-spiro[naphthalene-2,2'-[1,3]dioxolan]-5(3H)-one
Conditions | Yield |
---|---|
With 2,4,6-collidinium p-toluenesulfonate Inert atmosphere; Reflux; | 93% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
trifluoromethylsulfonic anhydride
Conditions | Yield |
---|---|
With 2,6-di-tert-butyl-4-methylpyridine In dichloromethane at 0 - 20℃; for 1h; | 88% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Conditions | Yield |
---|---|
With hydrogen; <((t-Bu)2PH)PdP(t-Bu)2>2 saturated with oxygen In tetrahydrofuran under 760 Torr; for 12h; Ambient temperature; | 83% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
(R)-1,2,3,4,8,8a-hexahydro-1β-hydroxy-8aβ-methyl-6-(7H)-naphthalenone
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With sodium tetrahydroborate In ethanol at 0℃; for 3.5h; Stage #2: With acetic acid In ethanol | 81% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
acetic anhydride
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In toluene at 115℃; for 5.5h; Inert atmosphere; | A 81% B 18% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
2,2-Dimethyl-1,3-propanediol
(dimethyl-2,2 propanediyldioxy-1,3)-1,1 methyl-8a octahydro-1,2,3,4,6,7,8,8a oxo-6 naphtalene
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In diethyl ether at 0℃; for 5h; | 80% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
tert-butyldimethylsilyl chloride
A
5-(tert-butyl-dimethyl-silanyloxy)-4a-methyl-4,4a,5,6,7,8-hexahydro-3H-naphthalen-2-one
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With sodium tetrahydroborate In methanol; dichloromethane at -78℃; Reduction; Stage #2: tert-butyldimethylsilyl chloride With 1H-imidazole In N,N-dimethyl-formamide at 45℃; Etherification; | A 75% B 10% |
chloro-trimethyl-silane
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
methyllithium
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione; methyllithium With N,N,N,N,N,N-hexamethylphosphoric triamide; copper(l) iodide; chloro-trimethyl-silane In 1,2-dimethoxyethane; diethyl ether at 0℃; for 1h; Inert atmosphere; Stage #2: With Oxone; 18-crown-6 ether; sodium hydrogencarbonate In dichloromethane; water; acetone at 0℃; for 1h; Inert atmosphere; Stage #3: chloro-trimethyl-silane In pyridine Inert atmosphere; | 75% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
2,2,7,7-tetramethyl-3,6-dioxa-2,7-disilaoctane
A
(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene
B
C15H22O4
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at -78 - -10℃; for 8.5h; | A 73% B 6.3% |
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at -78℃; for 8.5h; | A 73% B 6.3% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
trifluoromethylsulfonic anhydride
Trifluoro-methanesulfonic acid (S)-8a-methyl-6-oxo-3,4,6,7,8,8a-hexahydro-naphthalen-1-yl ester
Conditions | Yield |
---|---|
With 2,6-di-tert-butyl-4-methylpyridine In dichloromethane at 0 - 20℃; for 1.5h; | 70% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
N-(5-chloropyridin-2-yl)-1,1,1-trifluoro-N-[(trifluoromethyl)sulphonyl]methanesulphonamide
D
Trifluoro-methanesulfonic acid (S)-8a-methyl-6-oxo-3,4,6,7,8,8a-hexahydro-naphthalen-1-yl ester
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With N,N,N,N,N,N-hexamethylphosphoric triamide; lithium hexamethyldisilazane In tetrahydrofuran at -78 - 20℃; for 3h; Stage #2: N-(5-chloropyridin-2-yl)-1,1,1-trifluoro-N-[(trifluoromethyl)sulphonyl]methanesulphonamide In tetrahydrofuran at 20℃; for 1h; | A 4.5% B 2.3% C 5.3% D 69% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
Propargylamine
Conditions | Yield |
---|---|
sodium tetrachloroaurate dihydrate In ethanol at 78℃; for 24h; | 68% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
6a-methyl-6,6a,9,10-tetrahydro-5H-tetrazolo<5,1-b><3>benzazepin-7(8H)-one
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate; trimethylsilylazide In dichloromethane for 18h; Ambient temperature; | 67% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
2,2,7,7-tetramethyl-3,6-dioxa-2,7-disilaoctane
A
(8aS)-1,1-(1,2-ethylenedioxy)-1,2,3,4,6,7,8,8a-octahydro-8a-methyl-6-oxonaphthalene
B
(S)-4a-methyl-4,4a,6,7-tetrahydro-1H-spiro[naphthalene-2,2'-[1,3]dioxolan]-5(3H)-one
C
C15H22O4
Conditions | Yield |
---|---|
With trimethylsilyl trifluoromethanesulfonate In dichloromethane at -78℃; for 51h; Yields of byproduct given; | A n/a B 65% C n/a |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
diethyl chlorophosphate
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With N,N,N,N,N,N-hexamethylphosphoric triamide; lithium hexamethyldisilazane In tetrahydrofuran at -78 - 20℃; for 2.5h; Stage #2: diethyl chlorophosphate In tetrahydrofuran at 20℃; for 0.416667h; | A 4% B 61% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
ethylene glycol
(1S,6R)-8,8-ethylenedioxy-1-methylbicyclo[4.4.0]decan-2-one
Conditions | Yield |
---|---|
Stage #1: ethylene glycol With 5%-palladium/activated carbon; hydrogen; palladium dichloride at 20℃; for 0.25h; Stage #2: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione In tetrahydrofuran at 20℃; for 48h; | 60% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
chlorophosphoric acid diphenyl ester
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 2h; Stage #2: chlorophosphoric acid diphenyl ester In tetrahydrofuran at 0℃; for 0.333333h; | A 19% B 53% C 5% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
diethyl chlorophosphate
Conditions | Yield |
---|---|
Stage #1: (S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 2h; Stage #2: diethyl chlorophosphate In tetrahydrofuran at 0℃; for 0.333333h; | A 16% B 50% C 14% |
(S)-8a-methyl-3,4,8,8a-tetrahydro-2H,7H-naphthalene-1,6-dione
ethylene glycol
(S)-4'a-Methyl-4',4'a,6',7'-tetrahydro-1'H,3'H-spiro[[1,3]dioxolane-2,2'-naphthalen]-5'-one
Conditions | Yield |
---|---|
With 2,4,6-collidinium p-toluenesulfonate In toluene for 48h; Inert atmosphere; Reflux; | 44% |
The CAS register number of 1,6(2H,7H)-Naphthalenedione,3,4,8,8a-tetrahydro-8a-methyl-, (8aS)- is 33878-99-8. It also can be called as 1,6(2H,7H)-Naphthalenedione,3,4,8,8a-tetrahydro-8a-methyl-, (S)- and the systematic name about this chemical is (8aS)-8a-methyl-3,4,8,8a-tetrahydronaphthalene-1,6(2H,7H)-dione. The molecular formula about this chemical is C11H14O2 and the molecular weight is 178.23.
Physical properties about 1,6(2H,7H)-Naphthalenedione,3,4,8,8a-tetrahydro-8a-methyl-, (8aS)- are: (1)ACD/LogP: 0.85; (2)#H bond acceptors: 2; (3)Polar Surface Area: 34.14 Å2; (4)Index of Refraction: 1.519; (5)Molar Refractivity: 48.81 cm3; (6)Molar Volume: 160.7 cm3; (7)Polarizability: 19.35x10-24cm3; (8)Surface Tension: 39.1 dyne/cm; (9)Density: 1.1 g/cm3; (10)Flash Point: 122 °C; (11)Enthalpy of Vaporization: 56.77 kJ/mol; (12)Boiling Point: 325.5 °C at 760 mmHg; (13)Vapour Pressure: 0.000229 mmHg at 25 °C.
When you are using this chemical, please be cautious about it as the following:
When you are using this chemical, avoid contact with skin and eyes and do not breathe dust.
You can still convert the following datas into molecular structure:
(1)SMILES: O=C1CCC/C2=C/C(=O)CC[C@]12C
(2)InChI: InChI=1/C11H14O2/c1-11-6-5-9(12)7-8(11)3-2-4-10(11)13/h7H,2-6H2,1H3/t11-/m0/s1
(3)InChIKey: DNHDRUMZDHWHKG-NSHDSACABU
(4)Std. InChI: InChI=1S/C11H14O2/c1-11-6-5-9(12)7-8(11)3-2-4-10(11)13/h7H,2-6H2,1H3/t11-/m0/s1
(5)Std. InChIKey: DNHDRUMZDHWHKG-NSHDSACASA-N
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